Logo TU Ilmenau

Contact Person

Cindy Karcher

Phone +49 3677/69 1503

Send email

You are here


Research Training Group

Lorentz Force Velocimetry and Lorentz Force Eddy Current Testing
sponsored by the Deutsche Forschungsgemeinschaft DFG

The measurement of flow velocities in hot and aggressive liquids such as liquid aluminium and molten glass constitutes one of the grand challenges of industrial fluid mechanics. A different, albeit physically closely related challenge is the detection of deeply lying flaws and inhomogeneities in electrically conducting solid materials. Since 2004 scientists and engineers at Ilmenau University of Technology have been at the forefront of the development of two novel techniques, termed Lorentz force velocimetry and Lorentz force eddy current testing, which promise to meet these challenges. Both techniques are based on measuring a minute Lorentz force which acts upon a magnet system interacting with the moving liquid or solid. Based on the experience existing in Ilmenau in the fields of high-precision force measurement, high-resolution numerical simulation of fluid flows and the solution of inverse magnetohydrodynamic problems, the goal of the present research training group (RTG) is to measure the Lorentz forces, whose value is between 10-11 N and 1 N, and to deduce the desired parameters in fluids and solids by the solution of inverse problems. In order to reach this goal, a symbiotic interaction of high-precision experiments and numerical simulations are planned in three fields, namely A - flow measurement in liquid metals, B - flow measurement in electrolytes, C - eddy current testing of solid materials.


A - Liquid MetalsB - ElectrolytesC - Solid Bodies


It is planned to use the results of the research in collaboration with industry for the development of industrial prototypes which can be commercialised outside the RTG. The present subject is well suited for a RTG since the different fields of application are connected with each other by three methodological groups, namely MB - magnet systems, KS - force measuring systems, and TS - theory and simulation. The educational programme is characterised by three unique aspects.

  • The graduate students will acquire specialised knowledge in the field of computational engineering.
  • They will be involved in project-specific international collaboration.
  • The graduate students will be encouraged to work in close contact with industry. By virtue of colloquia, an extensive visiting-scientist programme, brainstorming-meetings and a regular monitoring, the time to complete a PhD should be shortened to three years.